Question

The weight of a USB flash drive is 30 grams and is normally distributed. Periodically, quality control inspectors at Dallas Flash Drives randomly select a sample of 17 USB flash drives. If the mean weight of the USB flash drives is too heavy or too light, the machinery is shut down for adjustment; otherwise, the production process continues. The last sample showed a mean and standard deviation of 31.9 and 1.8 grams, respectively. Using α = 0.10, the critical t values are _______.
A. reject the null hypothesis and shut down the process.
B. ​reject the null hypothesis and do not shut down the process.
C. ​fail to reject the null hypothesis and do not shut down the process) do nothing.
D. ​fail to reject the null hypothesis and shut down the process.

Answer 1

I have to think this again. be back later. X=2.22